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Microchip Technology MAPLAD18KP54AE3
- Part No.:
- MAPLAD18KP54AE3
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- Nonstandard SMD
- Datasheet:
-
MAPLAD18KP54AE3.pdf
- Description:
- TVS DIODE 54VWM 87.1VC PLAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
MAPLAD18KP54AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace, automotive, and industrial power systems. It delivers 18,000 W peak pulse power at 10/1000 μs, features a 54 V reverse standoff voltage (VWM), clamps to ≤87.1 V at 100 A peak impulse current, and exhibits 0.7 °C/W junction-to-case thermal resistance for efficient heat dissipation in lightning and load-dump protection circuits.
For engineers reviewing the MAPLAD18KP54AE3 datasheet, MAPLAD18KP54AE3 pinout, MAPLAD18KP54AE3 application, or MAPLAD18KP54AE3 equivalent, this device is selected for DO-160F Waveform 4 Level 4 compliance, IEC 61000-4-5 secondary lightning protection (42 Ω, 12 Ω, and 2 Ω source impedances), and AEC-Q101 qualified reliability in harsh-environment power rail protection.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector with avalanche breakdown behavior. Its unidirectional polarity places the cathode on the metal base (package bottom), enabling low-inductance mounting directly to heatsinks. The device meets RTCA DO-160F Section 22 multi-stroke lightning requirements and supports steady-state power dissipation up to 2.5 W at 25°C ambient.
It is rated for junction temperatures from –55°C to +150°C, features UL94V-0 void-free epoxy packaging, and uses annealed matte-tin plating compliant with MIL-STD-750 Method 2026. Moisture sensitivity level is IPC/JEDEC J-STD-020B Level 1 - no dry pack required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (PPP) | 18,000 W @ 10/1000 μs - sustains aircraft-grade lightning surges without failure |
| Reverse Standoff Voltage (VWM) | 54 V - maximum continuous DC or peak AC voltage before clamping initiates |
| Clamping Voltage (VC) | ≤87.1 V @ 100 A IPP - limits downstream circuit voltage during surge events |
| Junction-to-Case Thermal Resistance | 0.7 °C/W - enables direct thermal coupling to heatsink for cumulative stroke handling |
| Breakdown Voltage (V(BR)) | 60.0–66.3 V @ I(BR) - defines precise avalanche onset threshold for predictable clamping |
| Standby Current (ID) | ≤10 μA @ 54 V - ensures negligible leakage in standby power rails |
| Temperature Coefficient (αV(BR)) | +64 mV/°C - quantifies voltage drift across operating temperature range |
Pinout & Package
MAPLAD18KP54AE3 uses a surface-mount PLAD package with two terminals: anode and cathode. The cathode is electrically connected to the exposed metal base (bottom side), allowing direct thermal and electrical connection to a PCB copper pour or heatsink. Anode is accessed via the top-side metallized pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive input terminal | Connected to protected line; conducts surge current toward cathode during reverse-biased clamping |
| Cathode (Metal Base) | Reference/return terminal | Exposed copper base serves as low-inductance, low-thermal-resistance path to ground or chassis |
Key Features
| Feature | Design Value |
|---|---|
| DO-160F Waveform 4 Level 4 compliance | Validated for 6.4/69 μs pin-injection transients at 25°C - critical for avionics signal line protection |
| AEC-Q101 qualification | Qualified per stress test standard for automotive electronics - supports under-hood and battery-line applications |
| RoHS-compliant (e3 marking) | Lead-free matte-tin plating meets EU RoHS Directive 2011/65/EU - suitable for green manufacturing |
| IEC 61000-4-5 secondary lightning protection | Rated for Class 1–5 protection with 42 Ω source impedance, Class 1–4 at 12 Ω, and Class 2–3 at 2 Ω |
| Low-profile thermally optimized package | 0.7 °C/W RθJC and 50 °C/W RθJA (on FR4) - enables compact layout without forced cooling |
Applications
| Aerospace Avionics Power Distribution | Automotive Battery Line Protection |
|---|---|
Use Scenario: Protecting 28 V DC power buses in commercial aircraft against DO-160F Section 22 lightning-induced transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed upstream of DC-DC converters and flight control modules. Use Value: Sustains ≥100 multi-stroke 10/1000 μs surges at 18 kW while maintaining <87.1 V clamping - prevents latch-up in downstream ASICs. |
Use Scenario: Safeguarding engine control units (ECUs) and body control modules (BCMs) from 12 V automotive load dump events. IC Role / Device Role / Timing Role: Primary surge suppression on battery feed lines, mounted directly to chassis ground via metal base. Use Value: Clamps 100 A transients within <100 ps - faster than MOSFET-based protectors - preserving CAN/LIN signal integrity. |
| Industrial DC Power Supply Input | Railway Signaling Interface Protection |
Use Scenario: Securing 48 V telecom rectifier outputs against induced switching transients and EFT bursts. IC Role / Device Role / Timing Role: Secondary protection stage after MOVs, absorbing residual energy that bypasses front-end filtering. Use Value: 18 kW PPP rating handles repetitive 10/1000 μs surges at 0.05% duty cycle - extends system uptime in 24/7 infrastructure. |
Use Scenario: Shielding 72 V signaling interfaces in train control systems from track-induced lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable variant family member used in unidirectional configuration for isolated fieldbus lines. Use Value: Meets EN 50121-4 immunity requirements for rolling stock - validated at 42 Ω source impedance per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A | Lower PPP rating (600 W), SMA package, RθJC ≈ 35 °C/W | Not suitable for DO-160F multi-stroke or IEC 61000-4-5 Class 4+ testing | Select only for cost-sensitive, low-energy consumer-grade applications where 18 kW capability is unnecessary |
| SMCJ54A | 1500 W PPP, SMC package, RθJC ≈ 10 °C/W, same VWM/V(BR) tolerance | Lacks AEC-Q101 qualification and DO-160F validation; limited thermal endurance under repeated surges | Acceptable for industrial controls with single-event surge exposure, but not for aerospace or automotive safety-critical rails |
Compared with SMBJ54A and SMCJ54A, MAPLAD18KP54AE3 provides 30× higher peak pulse power, 14× lower thermal resistance, and certified compliance with aviation, automotive, and rail immunity standards - making it the sole choice for mission-critical, multi-stroke surge environments.
Availability
MAPLAD18KP54AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive battery management, and industrial DC power supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for safety-critical designs.
Supply support for MAPLAD18KP54AE3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.
The MAPLAD18KP54AE3 belongs to Microsemi's high-power PLAD TVS family, engineered specifically for multi-stroke lightning and load-dump protection in safety-certified systems where thermal robustness and regulatory compliance are non-negotiable.
FAQ
What is the clamping voltage of MAPLAD18KP54AE3 at its rated peak pulse current?
The MAPLAD18KP54AE3 has a maximum clamping voltage (VC) of 87.1 V when subjected to a 100 A peak impulse current (IPP) under 10/1000 μs waveform conditions. This value is guaranteed per the datasheet's Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is validated across the full operating temperature range and supports reliable interface protection in 28 V and 48 V systems.
Is MAPLAD18KP54AE3 qualified for automotive applications?
Yes, MAPLAD18KP54AE3 is AEC-Q101 qualified, confirming its suitability for automotive electronic systems including engine control units, battery management systems, and ADAS power supplies. The qualification covers stress tests for temperature cycling, humidity, mechanical shock, and surge endurance - all performed on the exact MAPLAD18KP54AE3 lot configuration. This makes MAPLAD18KP54AE3 appropriate for under-hood and battery-line placement where thermal and electrical reliability are critical.
How does the metal base cathode of MAPLAD18KP54AE3 impact PCB layout?
The metal base of MAPLAD18KP54AE3 serves as the cathode terminal and must be soldered directly to a large copper pour or heatsink for optimal thermal and electrical performance. This design reduces both thermal resistance (RθJC = 0.7 °C/W) and inductance, improving clamping speed and multi-stroke endurance. Layout requires a minimum 12.3 mm × 10.5 mm thermal pad with thermal vias to inner ground planes - as specified in the RF01215 package drawing - to avoid derating and ensure DO-160F compliance.
Does MAPLAD18KP54AE3 meet DO-160F Section 22 lightning requirements?
Yes, MAPLAD18KP54AE3 is explicitly validated for RTCA DO-160F Section 22 multi-stroke lightning testing, including Waveform 4 (6.4/69 μs) at Level 4. The device achieves this through its 18,000 W peak pulse power rating, low clamping voltage, and thermal design that prevents cumulative heating across repeated strokes. Documentation confirms MAPLAD18KP54AE3 is listed among qualified parts for Level 4 in the RF01215 datasheet - no additional qualification testing is needed for avionics integration.
What is the moisture sensitivity level (MSL) of MAPLAD18KP54AE3?
MAPLAD18KP54AE3 has a moisture sensitivity level (MSL) of Level 1 per IPC/JEDEC J-STD-020B, meaning it may be stored indefinitely at ambient conditions without dry packing or baking prior to reflow soldering. This eliminates MSL-related handling constraints and simplifies manufacturing logistics for high-reliability assembly lines - a key advantage over MSL 3+ TVS devices that require strict floor-life management.
MAPLAD18KP54AE3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- Nonstandard SMD
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 207A
- Power - Peak Pulse:
- 18000W (18kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Military
- Qualification:
- MIL-PRF-19500
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PLAD
MAPLAD18KP54AE3 FAQ
1.How can I place an order for MAPLAD18KP54AE3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAPLAD18KP54AE3 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAPLAD18KP54AE3 reliable?
The price and inventory of MAPLAD18KP54AE3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAPLAD18KP54AE3 is usually 5 days.
3.What payment methods are accepted for MAPLAD18KP54AE3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAPLAD18KP54AE3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAPLAD18KP54AE3?
MAPLAD18KP54AE3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAPLAD18KP54AE3 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAPLAD18KP54AE3?
For technical support, including MAPLAD18KP54AE3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAPLAD18KP54AE3 requirements.
6.How does Aetrix verify that MAPLAD18KP54AE3 is sourced from the original manufacturer or authorized distributors?
All MAPLAD18KP54AE3 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAPLAD18KP54AE3 meets industry standards.
7.What is the process for return or replacement of MAPLAD18KP54AE3?
All MAPLAD18KP54AE3 units undergo pre-shipment inspection (PSI). If there is an issue with MAPLAD18KP54AE3, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAPLAD18KP54AE3 part is unused and in its original packaging.
Return procedure for MAPLAD18KP54AE3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAPLAD18KP54AE3 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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